The Final Battle

Hypotheses Testing

100

What are the two hypotheses statements we use?

Null (H0) and Alternative (H1)

200

True or False: There isn't enough evidence when we fail to reject

True

300

We reject the P value ______ than the alpha

Less than or equal too

400

Using the T table, find the critical value  of a left tail when the alpha=.05 and a df=19

-1.729

500

Find the Test value of the 20 students and determine if you reject or fail to reject when your critical value is -1.729

sample mean= 2.27

mean= 2.98

sd=.98

Test Statistic=-3.24

we would fail to reject

Central Tendencies

100

What are the 3 main central tendencies 

Mean, median, mode

200

What is the midrange?

Max-min/2

300

Find the mean of the sample

4,6,8,9,10,12

8.1

400

Find the mean, median, and mode of the sample

3, 4, 6, 7, 12, 13, 15, 16, 18

mean=10.4

median= 12

mode= none

500

Find the mean, median, and mode of the sample

5475, 6617, 3124, 7560, 494, 3264, 279, 6799, 598, 3824

mean= 3,803.4

median=3,544

mode=None

Probability

100

In probability what does "and" and "or" stand for 

and: means that the outcomes has to satisfy both conditions at the same time

or: means that the outcome has yo satisfy one condition, or the other, or both at the same time

200

True or False: to be independent

P( A and B)  ≠ P(A) * P(B)

Flase

to be independent

P( A and B)  = P(A) * P(B)

300

Find the probability of getting a 10 or a jack in a deck of cards

2/13

400

exam scores: 90-98, 99-107, 108-116, 117-125, 126+

Applicants:   4,        11,        20,           10,       5

Find the probability that the applicants exam scores is 116 or less

(20+11+4)/50=7/10

500

exam scores: 90-98, 99-107, 108-116, 117-125, 126+

Applicants:   4,        11,        20,           10,       5

Find the probability that the applicants exam scores is no more than 107

(10+5)/50=3/10

Z score

100

Find the area between z=0 and z=1.07

.357

200

Find the area to the right if z=2.01

.22

300

Best point of estimate of a population mean is similar to what central tendency?

the mean

400

How do you find the confidence interval?

Using the sample mean, sample size, standard deviation, and Confidence level to find the upper and lower limit

500

The average student falls asleep 12 times in class. If the standard deviation is 3.2 find the probability that the mean of the sample of 36 is less than 11.

-1.875

Random but mean >:)

100

What is qualitative and what is quantitative data?

Qualitative data is interpretation-based/descriptive

(it's categorical data, stuff you can rank or put in groups)

Quantitative data is numbers-based, countable, or measurable 

(its things that have decimals)

200

What is the most popular major at UTRGV?

Biology

300

What did Amzaon originally sell before turning into the #1 shopping app?

Books

400

What does the average American do 22 times a day?

open the fridge

500

What is your PLTL leader majoring in?

Clinical Psychology